Blogs

Table of ContentsBAM Tailings Pond ChemistryBAM Flowsheet DescriptionReagentsEcotoxicologyAction PlanStudy ObjectivesTask and DeliverablesMitigation MeasuresMitigation MeasuresResultsData ReviewStandards AnalysisEcotoxicology TestingFindings and RecommendationsMitigation and MonitoringLessons Background: As we learned in Part 1, Bigass Mining (BAM) Company had just finished construction and had started mining and milling operations. The BAM tailings management facility (TMF) was designed as a non-discharge facility but was discharging. The TMF

Table of ContentsWorld Bank BackgroundMakeupRoles of the five World Bank Group InstitutionsExtractive Industries Review ProcessInitiationMakeupObjectiveFindings and Recommendations of the Extractive Industries ReviewPrefaceExecutive SummaryPro-poor GovernanceEnvironmental and Social Components of WBG InterventionsHuman RightsInstitutional PrioritiesA Synopsis of the Independent Extractive Industries ReviewIndustry Comments to the Extractive Industries ReportWorld Bank Draft ResponseComments to the Draft Management ResponseWB Chairman’s SummaryFuture World Bank Background Makeup The

Table of ContentsLoading to the Alumina to the AdsorbersBackwashing the Fixed Bed AdsorbersSelenium and Silica Adsorption CapacityEmpty Bed Contact Time (EBCT)Alumina RegenerationRegenerant Solution Disposal One objective of this study was to determine the critical parameters needed for designing of a plant to remove selenium from the mine leachate. While development of a full-scale engineering design was beyond the scope of

Table of ContentsFormColorRefractive IndexRing MembersCrystal StructureCrystal SizeCrystallinityEffective Pore DiameterCrystal Void Volume (cc/cc)Packing DensitySiO2/Al2O3 RatioMOH’s HardnessMoisture as PackagedpH of 1 % DispersionStabilityIon Exchange CapacityAmmonia Exchange CapacityTypical Chemical AnalysesExchange SelectivitiesExchange of Heavy Metal IonsTreatment of Mining and Metallurgical Effluents and Processing WastesConclusions Most natural zeolites now being produced are used in low tech applications such as horse stall deodorizers, aquarium filters, and

Table of ContentsHow a Passive Mine Drainage Treatment Systems WorksStep 1. Discharge CharacterizationStep 2. Discharge ClassificationStep 3. Net Alkaline DischargeStep 4. Net Acidic DischargeBenefits of Passive Mine DrainageApplications A Passive Mine Drainage Treatment Systems helps treat contaminated coal mine drainage to meet EPA and State water quality requirements. Approach A model (fig. 1) is presented for selecting, designing, and sizing

How to properly shock a well for coliform or e.coli bacteria is a question that comes up on a daily basis. So I’ll go through a few steps on how to do it correctly. Step #1 Flush well for 10 minutes, longer if well is over 150ft deep. Step #2 Size your well. Your well depth will determine how much

Table of ContentsTreatment/Process EvaluationTreatability TestworkAnalytical ResultsChemical StabilizationField Pilot ProjectPilot ResultsFull-Scale PlantSystem Features Environmental issues impact every aspect of industrial development and production today. Mining, although removed from many of the harsher environmental standards and costs felt by other industries since the advent of RCRA legislation, has found itself under increasing scrutiny by state and federal regulators. This is particularly so

Table of ContentsProblem DefinitionMining PracticesTreatment Mining activities were typified by surface exploratory drilling identifying ore distribution and extension of underground workings to the lead and zinc deposits outlined. Exploration holes were either left unplugged or plugged at the surface with a section of a telephone pole. Low grade ore and waste rock were discarded in rained out portions of drifts.

Table of ContentsAcid Water ProductionHydrogeology of Hard Rock MinesMining Features Related to Water Movement in the Active MineAbandoned Hard Rock MineNeed for Hydrogeologic Planning Man’s activity in developing, operating, and abandoning a mine often affects the quality of the ground water and surface water. Acid water drainage from mines is an example of an impact from mining that results in

Ion Exchange Resin Manufacturing To understand the parameters involved we need to know the ingredients and how they can affect physical and chemical stability of the finished resin. The main ingredients used to make strong acid cation (SAC) resins are styrene (S)(also known as ethenylbenzene, vinylbenzene, and phenylethene), divinylbenzene (DVB) and sulfuric acid (H2SO4). Since this is a two-step process,

Table of ContentsThree things to know about water quality for cannabis growthWater TemperatureWater pHWater TDS Off the radar grow-ups have a history of being just that “off the radar”, low key often clandestine operations without much regulations or standards. When medicinal cannabis became legal in Canada in 2016 and recreational use in 2018 it brought about regulations and standards that

Table of ContentsAbstractSpikingExtractionResults:Conclusion: Recent studies suggest that toxic and highly persistent poly-and perfluorinatedalkyl substances (PFAS) are much more prevalent in tissue and soil than in water. The increasing length of perfluoroalkyl chain in PFAS is correlated strongly to lower solubility/higher adsorption behaviour of a particular PFAS molecule in the environment. This poses a significant challenge to developing analytical methods, especially

Drainage of acid mine water into surface streams of coal mining areas is one of the most serious problems of stream pollution, since there is no known method that completely prevents its forming and no economically feasible treatment after it has formed. The mine acid problem differs from other pollution hazards because acid production does not end with cessation of